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Finding the Fourth Proportional to 211,730.76, 317,562.12 and 69,575.76

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Solution

The fourth proportional to 211,730.76, 317,562.12 and 69,575.76 is: 104,352.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,730.76 : 317,562.12 = 69,575.76 : x
  2. Step 2: Convert to fraction form
    211,730.76/317,562.12 = 69,575.76/x
  3. Step 3: Cross multiply
    211,730.76x = 317,562.12 × 69,575.76
  4. Step 4: Simplify right side
    211,730.76x = 22,094,625,846.21
  5. Step 5: Solve for x
    x = 22,094,625,846.21/211,730.76
  6. Step 6: Final answer
    x = 104,352.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.